Premolding and loading apparatus



Sept. 27, 1949. J. GREGG PREMOLDINQ AND LOADING APPARATUS Filed Aug. 30, 1945 2 Sheqts-Sheet l INVENTOR cfon regg BY g mgic;

ATTORNEY Sept. 27, 1949. J. GREGG. 2,483,004

PREMOLDING AND LOADING APPARATUS I Filed Aug. 50, 1945 v 2 Sheets-Sheet 2 2/ 32 Fig.5 5 m a\ l 53 52 Fig.6, 54 53 A:I'TORNEY Patented Sept. 27, 1949 UNITED STATES PATENT OFFlCE 7 2,483,004 PREMOLDING AND LOADING APPARATUS Jon Gregg, New Hope, Pa.

Application August 30, 1945, Serial No. 613,546

v p 4 Claims. 1

This invention relates to premolding and loading apparatus. It is particularly directed to apparatus for premoldinga sole or the like article, and for loading the same into a' final mold in which the article may be molded by use of heat and pressure and particularly by the use of high frequency current.

An object of this invention is to provide apparatus of the character described comprising a premolder adapted to receive an article to be molded, means tocompress the article in, the premolder, and means fortransferring the article from the premolder to the final mold.

Yet another object of this invention is to provide a strong, durable and compact apparatus of the character described which shallbe smooth and positive in operation, and yet practical and efficient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the fea: tures of construction, combinations of elements, and arrangementof parts which will be exemplified in the construction hereinafter described, and of which the scope of application will be indicated in the following claims.

In the accompanying drawing, in which is shown various possible illustrative embodiments of this invention,

Fig. 1 is a perspective view of a. premolding and .5

loading apparatus embodying the invention;

Fig. 2 is a transverse cross-sectional view of the premolder;

Fig. 3 is a partial, cross-sectional view taken on line 33 of Fig. 2;

Fig. 4 is a longitudinal cross-sectional view taken through the premolder;

Fig. 5 is a view similar to Fig. 4 but showing a sole in the premolder and the ram of the final mold placed on the sole; 7

Fig.6 is a view similar to Fig. 5 but illustrating the method of transferring the sole from the premolder to the final mold; and

Fig. 7 is a view similar to Fig. 6 and showing the sole and ram transferred from the premolder to the final mold.

Referring now in detail to the drawing, I designates apparatus embodying the invention. The same comprises a base I I provided with four upstanding tubular guide posts I2. Slidably mounted on the guide posts I2 is a premolder I4.

The premolder I4 comprises a member I formed with a through opening I6 having partly the shape of a sole or other article to be molded. Extending from the opening I6 is a slot I! leadapair of parallel edges I8a each formed with a longitudinal groove I9. Plate I5 is formed with extending flanges 26 adjacent its upper surface.

.Below the flanges 26 are outer arallel side surfaces 2i each formed with a horizontal groove 22. Plate I5 is formed at the four corners thereof with through openings 23 to receive the tubular posts I2. At the upper endsof the tubular posts I2 are pulleys 24. Connected to plate I5 as at 25 are cables 26 extending over pulleys 24 and passing downwardly through the tubular posts I2. Any suitable means may be provided to simultaneously pull the cables for lifting or lowering plate I5. 7

slidably mounted on the underside of the preformer plate I5 is a bottom plate 30 having upwardly extending side walls 3| from which extend inwardly directed flanges 32 slidably engaging within grooves 22. I

It will now be understood that plate 30 may slide transversely of plate I5 and covers the underside opening I6 as well as slot 11.

Slidably mounted on plate I 5 is a presser plate 40. Presser plate fits within slot I1 between edges I8a. Plate 40 is formed at the sides there of with longitudinal guide ridges 43 slidably received in the grooves I9. Said plate 40 has an inner edge 45 complementary to edge I6a of opening i6 together therewith forming the periphery of a premold cavity.

On the base II and below the plate I5 may be placed the body 56 of the final mold M. Said final mold M comprises said body 56 made of heat insulating, electric non-conducting material. The mold M may be constructed as disclosed in my co-pending abandoned application Serial No. 613,539, filed on the 30th day. of August, 1945.

, Said mold body is formed with a through opening 52 and with an internal shoulder 53. In the bottom of the mold body is'a bottom plate 54 made of conducting material and provided with peripheral flanges 55 adapted to rest on shoulder 53. The mold M further comprises a top ram 56 likewise made of conducting material and adapted to enter the upper portion of opening 52 to form with the bottom plate 54 the mold cavity 66.

At one side of presser 46 is a plunger 62 of any suitable type adapted to press the presser plate 48 to the left shown in Fig. 2 toward opening I6. The plunger 62 may be operated by any suitable pressure apparatus.

Also slidably mounted above opening I6 is a vertical plunger 63 adapted to press downwardly. The plunger 63 has a plate 64 adapted to enter ram 56 is then placed in opening aboye the sole S. The plunger 62 is then abtuatedtethe left to press plate 40 against the sole S t pr e mold the same. Plate 15 is then lowered until drawn to uncover the bottom of opening 16 Plunger 63 is then actuated downwardly whens-- fer. h s l S to h me d 56,- e me time,,,th e top ram 55 is pressed downwardly to eornpressthe' sole 8. The ram 5'6 may thenbe locked to the body. hereafter plate may be raised, llhe mold may then be transferred to frequency'apparatus such as shown in my co-pending application Serial No. 610,261, filed-on the llthday of August, 1945, or may be heated in any-other suitable manner. The sole s'may' be of the type shown in my Patent- No. 2 36 9 Although the premolding and mOlding apparatus is" illustrated herein in connection with a sole'it willbe understoodthat any other suitable article may be prcmolded and transferred to a final mold, it merely being necessary to make the shape of the mold'ope'nings suitable to receive thearticle to be molded.

It 'will thus be seen that there is provided a d-evi'ce'inwhich the several objects of this invention are achieved, and which is well adapted to meet the conditionsof practical use.

various possible embodiments might be made of the above invention, and as various changes might be-made in the embodiment above set forth, it is to be understood that all matter herein setforth orshown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. Apparatus of the character described comprising a base, a mold body on the base, a plurality of postson the base, a premold plate slidably mounted on the posts and disposed-above the moldbody, said premold-plate having anopening to receive. an article to. be molded, plunger means for transferring said articlewholly from thepre' mold platev to the. mold body, and means to apply side, pressureto the article. to be molded while it is .in the. premold plate.

2. Apparatus of the character described comprising a premolder adapted to receive an article to be premolded, means movable on the premolder for applying side pressure to said article, a final mold, and means movable in a direction perpendicular to the direction of movement of the first means for transferring the article in the premolder, wholly to the final mold.

3. Apparatus of the character described comn i aabase. a fi mo e e e asa a ,IIIQLQBI, means to suppgrtthe premolder above the final mold for sliding movement toward and away from said final mold, said premolder being provided with means to receive an article to be premolded, andplunger means movable relative tgthe premolder, for transferring the article to be premblded from the premolder to the final moldyandmeanamovable on the premolder in a direction perpendicular to movement of the plunger means, to apply side pressure to the article to be premolded:

'4 .Apparatus'oftfie character described comprising a base, a final-mold on the base, a prem'ololer, means to support the premolder above the final mold forsliding movement toward and away from saidfina l niold, said-premolder being provided-withmeans to receive an article to be premolded, means on the premolder to apply side "pressure to the article to be premolded, a bottomplate sl-idably mountedon said premoldel' to support the article within the. premolder, and 'said bottom plate being adapted to -bemovedto a position. for uncovering. the article within the premolderto permit said-article to be transferred to the final' mold and means for transferring the premoldedt article from the .premolderto the finalmold.

JON. GREGG.

REEEBENCES. CITED;

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1,964,911 Haas July 3, 1934 2,157,961. MacCallur-n- May 9,. 1939 2,325,687 Kux Aug. 3, 1943 2,351,713 Sayre June. 20, 1944 2,364,029 Ryan. Nov. 28, 1944 R sa es BAT RTS.

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